<template>
    <div>
        <!-- 三级分类 -->
        <Category :scene="scene"></Category>
        <el-card style="margin: 10px 0px;">
            <!-- v-if|v-show都可以实现显示与隐藏，v-if每次要销毁耗性能 -->
            <div v-show="scene == 0">
                <el-button @click="addSpu" type="primary" plain icon="Plus"
                    :disabled="categoryStore.c3Id ? false : true">添加SPU</el-button>
                <!-- 展示已有SPU数据 -->
                <el-table style="margin: 10px 0px;" border :data="records">
                    <el-table-column label="序号" align="center" type="index" width="80px"></el-table-column>
                    <el-table-column label="SPU名称" prop="spuName"></el-table-column>
                    <el-table-column label="SPU描述" prop="description" show-overflow-tooltip></el-table-column>
                    <el-table-column label="SPU操作">
                        <!-- row :即为已有的Spu对象-->
                        <template #="{ row, $index }">
                            <el-button type="primary" size="small" icon="Plus" title="添加SKU"
                                @click="addSku(row)"></el-button>
                            <el-button type="warning" size="small" icon="Edit" title="修改SPU"
                                @click="updateSpu(row)"></el-button>
                            <el-button type="info" size="small" icon="View" title="查看SKU列表"
                                @click="findSku(row)"></el-button>
                            <el-popconfirm :title="`你确定删除${row.spuName}?`" width="200px" @confirm="deleteSpu(row)">
                                <template #reference>
                                    <el-button type="danger" size="small" icon="Delete" title="删除SPU"></el-button>
                                </template>
                            </el-popconfirm>
                            
                        </template>
                    </el-table-column>
                </el-table>
                <!-- 分页器 -->
                <el-pagination v-model:current-page="pageNo" v-model:page-size="pageSize" :page-sizes="[3, 5, 7, 9]"
                    :background="false" layout=" prev, pager, next, jumper,->, sizes,total" :total="total"
                    @current-change="getHasSpu" @size-change="changeSize" />
            </div>
            <!-- 添加SPU|修改SPU子组件 -->
            <SpuForm ref='spu' v-show="scene == 1" @changeScene="changeScene"></SpuForm>
            <!-- 添加SKU子组件 -->
            <SkuForm ref='sku' v-show="scene == 2" @changeScene="changeScene"></SkuForm>
            <!-- dialog对话框：展示已有的SKU数据 -->
            <el-dialog v-model="show" title="SKU列表">
                <el-table border :data="skuArr">
                    <el-table-column label="SKU名字" prop="skuName"></el-table-column>
                    <el-table-column label="SKU价格" prop="price"></el-table-column>
                    <el-table-column label="SKU重量" prop="weight"></el-table-column>
                    <el-table-column label="SKU图片">
                        <template #="{ row, $index }">
                            <image :src="row.skuDefaultImg" style="width:100px;height:100px;"></image>
                        </template>
                    </el-table-column>
                </el-table>
            </el-dialog>
        </el-card>
    </div>
</template>

<script setup lang="ts">
import { ElMessage } from 'element-plus';
import { ref, watch ,onBeforeUnmount} from 'vue';
//引入分类的仓库
import useCategoryStore from '@/store/modules/category';
import { reqHasSpu, reqSkuList ,reqRemoveSpu} from '@/api/product/spu/index';
import type { HasSpuResponseData, Records, SpuData, SkuInfoData, SkuData } from '@/api/product/spu/type';
//引入相应的子组件
import SpuForm from './spuForm.vue';
import SkuForm from './skuForm.vue';
let categoryStore = useCategoryStore();
//场景数据
let scene = ref<number>(0);//0：显示已有SPU  1：添加或者修改已有SPU  2：添加SKU的结构
//分页器默认页码
let pageNo = ref<number>(1);
//每一页展示几条数据
let pageSize = ref<number>(3);
//存储已有的SPU的数据
let records = ref<Records>([]);
//存储已有SPU总个数
let total = ref<number>(0);
//获取子组件实例spuForm
let spu = ref<any>();
//获取子组件实例
let sku = ref<any>();
let show = ref<boolean>(false);
//存储全部的SKU数据
let skuArr = ref<SkuData[]>([])
//监听三级分类ID变化
watch(() => categoryStore.c3Id, () => {
    //务必保证有三级分类的Id
    if (!categoryStore.c3Id) return;
    getHasSpu();
})
//此方法执行可获取某一个三级分类下全部的已有的SPU
const getHasSpu = async (pager = 1) => {
    //修改当前页码
    pageNo.value = pager;
    let result: HasSpuResponseData = await reqHasSpu(pageNo.value, pageSize.value, categoryStore.c3Id);
    if (result.code == 200) {
        records.value = result.data.records,
            total.value = result.data.total
    }
}
//分页器的下拉菜单发生变化时触发
const changeSize = () => {
    getHasSpu();
}
//添加新的SPU按钮的回调
const addSpu = () => {
    //切换为场景1：添加与修改已有的SPU结构->SpuForm
    scene.value = 1;
    //点击添加SPU按钮，调用子组件的方法初始化数组
    spu.value.initAddSpu(categoryStore.c3Id);
}
//修改新的SPU按钮的回调
const updateSpu = (row: SpuData) => {
    scene.value = 1;
    //调用子组件实例方法获取完整已有的SPU的数据
    spu.value.initHasSpuData(row);
}
//子组件SpuForm绑定自定义事件：目前是让子组件通知父组件切换场景为0
const changeScene = (obj: any) => {
    //子组件Spuform点击取消变为场景0：展示已有的SPU
    scene.value = obj.flag;
    //再次获取全部的已有SPU
    if (obj.params == 'update') {
        //更新留在当前页
        getHasSpu(pageNo.value);
    } else {//添加留着第一页
        getHasSpu();
    }
}
//添加SKU按钮的回调
const addSku = (row: SpuData) => {
    //点击添加SKU按钮切换场景为2
    scene.value = 2;
    //调用子组件的方法初始化添加SKU的数据
    sku.value.initSkuData(categoryStore.c1Id, categoryStore.c2Id, row);
}
//查看SKu列表的数据
const findSku = async (row: SpuData) => {
    let result: SkuInfoData = await reqSkuList((row.id as number));
    if (result.code == 200) {
        skuArr.value = result.data;
        show.value = true;//对话框展示
    }
}
//删除已有的SPU按钮的回调
const deleteSpu=async(row:SpuData)=>{
    let result=await reqRemoveSpu((row.id as number));
    if(result.code==200){
        ElMessage({
            type: 'success',
            message: '删除成功'
        });
        //获取已有的Spu的数组
        getHasSpu(records.value.length>1?pageNo.value:pageNo.value-1);
    }else{
        ElMessage({
            type: 'error',
            message: '删除失败'
        })
    }
}
//路由组件销毁前，清空仓库关于分类的数据
onBeforeUnmount(()=>{
    categoryStore.$reset();
})
</script>

<style lang="scss" scoped></style>
